Geometry2d::Line Class Reference

Public Member Functions
	Line (Point p1, Point p2)
	Line (const Segment &other)
Point	delta () const
bool	operator== (const Line &other)
float	distTo (Point other) const
	returns the shortest distance between the line and a point More...
void	transform (const TransformMatrix &t)
	Applies a transformation matrix to the line. More...
bool	intersects (const Line &other, Point *intersection=nullptr) const
	Test for line intersections. More...
bool	intersects (const Segment &other, Point *intersection=nullptr) const
bool	intersects (const Circle &circle, Point *p1=nullptr, Point *p2=nullptr) const
	returns the points of intersection b/t circle and line
float	pointSide (const Point &p) const
	tells you which side of the line you are on More...
Point	nearestPoint (Point p) const
	Returns the point on the line closest to p.
std::string	toString ()

Static Public Member Functions
static bool	intersects (const Line &line1, const Line &line2, Point *intersection=nullptr)

Public Attributes
Point	pt [2]
	the line consists of two points

Collaboration diagram for Geometry2d::Line:

Member Function Documentation

distTo()

float Geometry2d::Line::distTo

(

Point

other

)

const

returns the shortest distance between the line and a point

Parameters

other

the point to find the distance to

Returns

the distance to the point from the line

intersects()

bool Geometry2d::Line::intersects	(	const Line &	other,
		Point *	intersection = nullptr
	)		const

Test for line intersections.

If the two lines intersect, then the function returns true, else false. Also, if the lines intersect, then intr is set to the intersection point.

Parameters

other	the line to test for intersection with
intr	set to the intersection point if the lines intersect

Returns

true if the lines intersect, false otherwise

pointSide()

float Geometry2d::Line::pointSide ( const Point &  p ) const

inline

tells you which side of the line you are on

Returns

the sine of the non-zero portion of the cross product

transform()

void Geometry2d::Line::transform ( const TransformMatrix &  t )

inline

Applies a transformation matrix to the line.

Parameters

t	the transformation matrix to perform on the line

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The documentation for this class was generated from the following files:

• common/Geometry2d/Line.hpp
• common/Geometry2d/Line.cpp